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Abstract
This paper presents a model to design assembly lines which require long cycle times and complete relatively few products. Work-force requirements in such lines are dynamic in nature, since due to learning, worker's performance time is a decreasing function of the number of units already being assembled.
Instead of balancing the cycle time at all stages, the model permits the cycle time to decrease in time. An iterative linear programming approach is used to minimize total cost, including labor cost, hiring and lay off by varying the cycle time of the line.